Dental Material Color Stability Tester | ISO 4049 / YY 0270 / ASTM G155 Compliant
The Dental Material Color Stability Tester, also known as a Dentistry Base Polymer Color Stability Tester, is used to evaluate the color stability of dental base polymers under various environmental conditions. Dental base polymers, including materials used in dentures, braces, and other restorative applications, may undergo color changes over time due to exposure to light, temperature, humidity, and other environmental factors.
This tester simulates these conditions in a controlled laboratory setting and measures the color change of polymer samples over time. By comparing initial and subsequent color measurements, the instrument allows dentists, technicians, and manufacturers to assess material performance, select polymers with superior color stability, and improve the quality and durability of dental restorations.
Applications
Evaluating color stability of dental base polymers used in dentures, braces, and other restorative devices
Supporting dental material research and development
Quality control of dental polymer production
Regulatory compliance testing for dental materials and restorative products
Helping manufacturers improve formulations for better long-term color retention
Standards Compliant
YY 0270.1-2011 / YY/T 0631-2008 – Dentistry base polymer color stability testing
ASTM C1442 – Conducting tests on sealants using artificial weathering apparatus
ASTM C1501 – Color stability of building construction sealants under laboratory accelerated weathering
ASTM D3424 – Evaluating lightfastness and weatherability of printed matter
ASTM D5071 / D6695 – Xenon arc exposures of photodegradable plastics and coatings
ASTM G151 / G155 – Operating Xenon arc light apparatus for non-metallic materials
COLIPA in-vitro UVA (2011) – In vitro UVA protection determination
EPA/ASTM E896 – Aqueous direct photolysis tests
GB/T 8427 / GB/T 16422 – Color fastness and exposure of plastics to laboratory light sources
ICH Q1B / Q5C – Photostability and stability testing of new drugs and biotechnological products
ISO 4049 / ISO 7491 – Dentistry polymer-based restorative materials and color stability
ISO 4892-1 / ISO 4892-2 – Plastics: General guidance and Xenon-arc exposure methods
Compliance with these standards ensures accurate, reproducible, and internationally recognized results.
Technical Parameters
| Parameter | Specification |
|---|---|
| Control System | PLC |
| Operation Interface | Color touch screen, Chinese/English switch |
| Light Source | Illuminance: 150,000 lx ±10% |
| Color Temperature Range | 5000K–10000K |
| Filter | Transmittance > 90% |
| Test Box Temperature | 37°C (Water temperature adjustable: 0–99°C) |
| Clip | 304 stainless steel, Ø50 mm, thickness 0.5 mm |
| Polyurethane Film | Thickness: 50 µm – 0.5 mm |
| Dial Indicator | Range: 0–25.5 mm, resolution 0.01 mm |
| Constant Temperature Tank | 15 L, 0–99°C |
FAQ
1. What is a Dental Material Color Stability Tester?
It is a device that evaluates how dental polymers and restorative materials retain their color under simulated environmental conditions such as light, temperature, and humidity.
2. Why is color stability testing important?
Dental restorations must maintain aesthetic appearance over time. Color stability testing ensures materials will not discolor, maintaining patient satisfaction and clinical performance.
3. What materials can be tested?
Dental base polymers used in dentures, braces, crowns, and other polymer-based restorative dental devices.
4. How does the tester work?
The sample is exposed to controlled light, temperature, and humidity conditions. Initial color values are measured and compared to values after exposure to assess color change.
5. Which standards does it comply with?
YY 0270.1-2011, YY/T 0631-2008, ISO 4049, ISO 7491, ASTM G155, ASTM D5071, and related international standards.
2025-12-08 17:55